Results 31 to 40 of about 6,621,534 (346)

Psychophysical aspects of contrast sensitivity

African Vision and Eye Health, 2013
This paper reviews the psychophysical aspects of contrast sensitivity which concerns components of visual stimuli and the behavioural responses and methods used in contrast sensitivity testing.
Anusha Y. Sukha, Alan Rubin
doaj   +1 more source

Comparison of the outcome of partial time occlusion therapy in strabismic versus anisometropic moderate amblyopes

Journal of the Egyptian Ophthalmological Society, 2022
Background Early in life, selective visual input disruption to one eye compromises most of the visual aspects, resulting in amblyopia, with a great social and economic effect.
Momen M Hamdi, Amr S Galal, Tarek R Ragheb, Samah M Fawzy   +3 more
doaj   +1 more source

Neonatal Contrast Sensitivity and Visual Acuity: Basic Psychophysics

Translational Vision Science & Technology, 2018
Purpose This research was prospectively designed to determine whether a 0.083 cycles per degree (cy/deg) (20/7200) square-wave stimulus is a good choice for clinical measurement of newborn infants' contrast sensitivity and whether the contrast ...
Angela M. Brown, Faustina Ottie Opoku, M. Stenger   +2 more
semanticscholar   +1 more source

Contrast sensitivity in β-thalassemic patients

Journal of the Egyptian Ophthalmological Society, 2015
Aim of work This work aimed to diagnose any abnormalities in contrast sensitivity and retinal functions in β-thalassemic patients. Patients and methods Thirty patients diagnosed with b-thalassemia were included in this study.
Tamer H El-Sersy, Heba W El-Saed
doaj   +1 more source

Evaluating the performance of the quick CSF method in detecting contrast sensitivity function changes

Journal of Vision, 2016
The contrast sensitivity function (CSF) has shown promise as a functional vision endpoint for monitoring the changes in functional vision that accompany eye disease or its treatment.
Fang Hou, Luis A. Lesmes, Woojae Kim, Hairong Gu, M. Pitt, Jay I. Myung, Zhonglin Lu   +6 more
semanticscholar   +1 more source

The Effect of Ocular Surface Regularity on Contrast Sensitivity and Straylight in Dry Eye.

Investigative Ophthalmology and Visual Science, 2017
Purpose To investigate the association between visual function and ocular surface regularity in dry eye. Methods We enrolled 52 eyes of 52 dry eye patients (34 dry eyes with superficial punctate keratopathy [SPK] in the central corneal region [central ...
S. Koh, N. Maeda, Chikako Ikeda, S. Asonuma, Mai Ogawa, T. Hiraoka, T. Oshika, K. Nishida   +7 more
semanticscholar   +1 more source

Active Learning to Characterize the Full Contrast Sensitivity Function in Cataracts

Clinical Ophthalmology, 2022
Filippos Vingopoulos,1,2 Megan Kasetty,1 Itika Garg,1,2 Rebecca F Silverman,1 Raviv Katz,1,2 Ryan A Vasan,3 Alice C Lorch,3 Zhonghui K Luo,3 John B Miller1,2 1Harvard Retinal Imaging Lab, Massachusetts Eye and Ear, Harvard Medical School, Boston, MA, USA;
Vingopoulos F, Kasetty M, Garg I, Silverman RF, Katz R, Vasan RA, Lorch AC, Luo ZK, Miller JB   +8 more
doaj  

The effect of transcranial direct current stimulation on contrast sensitivity and visual evoked potential amplitude in adults with amblyopia

Scientific Reports, 2016
Amblyopia is a neurodevelopmental disorder of vision that occurs when the visual cortex receives decorrelated inputs from the two eyes during an early critical period of development. Amblyopic eyes are subject to suppression from the fellow eye, generate
Z. Ding, Jinrong Li, Daniel P. Spiegel, Zidong Chen, Lily Y. L. Chan, G. Luo, Junpeng Yuan, D. Deng, Minbin Yu, B. Thompson   +9 more
semanticscholar   +1 more source

Dyschromatopsia and contrast sensitivity changes in COVID-19 patients

Indian Journal of Ophthalmology, 2023
Purpose: To evaluate the alterations in the psycho-physical tests, contrast sensitivity (CS) and hue discrimination (total estimation score, TES) in COVID-19 patients.
Aditi Sharma, Aditya Singh, Yashik Bansal, Aditi Mohan, Ramya Gnanaraj, Pranita Khulbe, Kavita Pangtey, Kaushiki Tripathi, Mohammad Ali Khan, Akshita Sharma, Manish Jain   +10 more
doaj   +1 more source

Predicting individual contrast sensitivity functions from acuity and letter contrast sensitivity measurements

Journal of Vision, 2016
Contrast sensitivity (CS) is widely used as a measure of visual function in both basic research and clinical evaluation. There is conflicting evidence on the extent to which measuring the full contrast sensitivity function (CSF) offers more functionally ...
Steven M. Thurman, P. Davey, Kaydee L McCray, Violeta Paronian, A. Seitz   +4 more
semanticscholar   +1 more source